CSS
.html {
background:
linear-gradient(135deg, transparent 50%, rgba(0, 0, 0, 0.1) 50%),
linear-gradient(45deg, transparent 50%, rgba(255, 255, 255, 0.2) 50%),
linear-gradient(45deg, transparent 0%, green 0%, green 25%, transparent 25%, transparent 50%, green 50%, green 75%, transparent 75%) 0 0;
background-size: 50em 50em, 50em 50em, 100em 100em;
background-color: yellow;
font-size: 1px;
}
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